Dumping-car.



PAT'ENTED AUG. 23, 1904.

' 1 A'. F. BERNARD. F.

DUMPING GAR.

APPLIOATION FILED 811F114. 1903.

N0 MODEL.

' No. 768,024. PATENTED AUG. 23 1904 'A.F.'BERNARD.

DUMPING GAR.

APPLICATION FILED SEPT. 14, 1903. N0 MODEL. 2 SHEETS-SHEET 2.

. quires the combined efforts of a number of i UNITED STATES 1 PatentedAugust 23, 1904.

PATENT OFFICE.

DUMPlNG-CAR.

SPECIFICATION forming part of Letters Patent N 0. 768,024, dated August23, 1904- Application filed September 14:, 1903. Serial No. 173,042. (Nomodel.)

To all whom, it may concern:

Be it known that I, ALFRED F. BERNARD, a citizen of the United States ofAmerica, and a resident of Chicago, Cook county, Illinois, have inventeda certain new and useful Imrovement in Dumping-(Jars, of which thefolowing is a specification.

Broadlyconsidered, my invention contemplates a dump-car in whichimproved means are provided for converting the movement of the car as awhole into a tilting movement on the part of the body.

Dump-cars of the type to which my invention relates have heretofore beendumped manually, and when heavily loaded this remen and sometimesnecessitates the use of crowbars or like implements. Generally stated,the object of my invention is to provide improved and inexpensive meansfor obviating this difficulty and whereby the car may be dumped by powerderived from the axle while the car is in motion or from any othermember having movement relatively to the body. The arrangement includes,of course, controllable mechanism by which the operator may at willplace the dumping mechanism in condition to operate. I claim to be thefirst to provide for the dumping, of the car by power derived through amanuallycontrolled frictional device from the motion of the car, andwhile the mechanism hereinafter described and shown in the drawings iseffective it will be understood that in its broadest aspect theinvention is not limited thereto. It comprehends, as stated, a dumpcarand means including a frictional powertransmitting device for causingthe body of the car to dump as a result of the movement of the car alongthe rails.

The nature of my invention will, however, hereinafter more fully appear.I

In the accompanying drawings, Figures 1 and 2 are side elevations viewedfrom opposite sides of a dump-car embodying the invention, one of thenear track-wheels being omitted from each view. Fig. 3 is a transversesection thereof with the body in normal position. Fig. 4 is a transversesection thereof with the body in dumping position.

able construction is shown mounted to oscillate about a horizontal axisB, suitably supported by the truck or frame C. The displacable side a ofthe body is held constantly at the same elevation by means of links a,pivoted to the ends'of the body at a, and by links a ,'pivoted to thelinks a and to the truckframe, thisbeing a familiar construction in carsof this type.

The arrangement for tilting the body is as follows: Upon the dischargesideof the center of oscillation a chain is attached to the body,preferably through the medium of a bracket secured to the bottomthereof, the other end of the chain being attached to a short arm a atone end of the rock-shaft E, which latter is arranged transversely andmounted to rock in suitable bearings carried by the frame C. At anintermediate point the chain is adapted to contact with the axle C, andto this end it is preferably wound several times around the axle. To therock-shaft E is fixed a lever F, which extends upward and is providedwith an inclined shoulder f, this shoulder being adapted to engage a lugG,carried by the body, so that when the shoulder is in engagement withthe lug the car will be prevented from dumping. When it is'desired todump the car, the lever is moved in the direction indicated by the arrowin Fig. 2. The first effect of this movement is to free the lug (3r fromthe shoulder f. A continuation of the movement draws the slack out ofthe chain D and causes it to have frictional contact with the axle C.Assuming the axle to be moving in the direction indicated bythe arrow, adownward pull will be exerted on the body, whereby it is tilted anddumped, as shown in Fig. 4. In this Way even a moderate force applied tothe lever F may be caused to exert a powerful pull upon the chain, andit is easily within the power of one man to dump the car, even whenheavily loaded, by this mechanism. In order to facilitate reaching andmanipulating the lever, a rope f is connected to its upper end andallowed to hang down within convenient reach. The load or contents ofthe car having been discharged, the lever F is released, and a spring Ithen restores it to normal position, as shown in Fig. 2. The tension ofthe chain being thus removed, a powerful coil-spring J, attached at oneend to the body of the car and at the other end to the track C, willreturn the body of the car to its normal position. In so doing the lugG, which has a curved side, will engage the inclined or cam-like portionf of the lever F, and thereby move the lever in opposition to the forceof the spring I. This will permit the lug G to pass beneath the shoulderf, whereupon the spring I will return the lever to the position shown-inFig. 2. The lower portion of the lever works behind a guide bar or plateK, and a shoulder a: on this plate limits the forward movement of thelever when under the influence of the spring I and arrests it in properposition to be engaged by the lug G while the body is returning tonormal position.

In the foregoing description I have referred to the device D as a chain;but I desire to have it understood that all other suitable flexibleconnectionssuch as a rope, cable, or a band-are the equivalent of achain so far as the present invention is concerned. I may use any ofthese devices.

The car can be made to dump while running in either direction. With thechain wound as shown the dumping arrangement will only work when theaxle C is rotated in the direction shown; but by detaching the chain andwinding it around the axle in an opposite direction the car can then bemade to dump while running in the opposite direction.

The dumping arrangement pulls the body down and holds it until the loadis dumped. Suppose the body tilts suddenly, thereby causing slack in thechain between the body and the axle. In such case the operator orattendant pulls promptly on the rope f thereby immediately taking up theslack in the chain and thus preventing a premature return of the body toits normal position.

The frictional power-transmitting device, consisting of a frictionalengagement of the chain with the axle, permits the car-body to be dumpedin this manner with safety and without danger of breakage, as thisfrictional device is sufliciently positive in character to insure thedumping action, but is at the same time of a sufficiently-yieldingcharacter to preclude all possibility of breakage, thus making it safeto dump the car without stopping its forward movement.

What I claim as my invention is 1. A dump-car, comprising a truck andbody, a flexible connection attached at one end to the body and adaptedto contact with the axle, a shaft having an arm to which the flexibleconnection is attached, and devices for turning the shaft for effectingan operative engagement between the flexible connection and axle.

2. A dump-car, comprising a truck and body, a flexible connectionattached at one end to the body and adapted to contact with the axle, arock-shaft having an arm to which the flexible connection is attached,and a lever on the shaft for turning it and thereby effecting anoperative engagement between the flexible connection and axle.

3. A dump-car, comprising a truck and body, a flexible connectionattached at one end to the body and adapted to contact with the axle, arock-shaft having an arm to which the flexible connection is attached, alever attached to the shaft for turning it, said lever having ashoulder, and a lug carried by the body and adapted to be engaged bysaid shoulder.

i. A dump-car, comprising a truck body, devices deriving power from thefor dumping the body, devices including a. lever under the control ofthe operator for controlling the dumping devices, said lever having ashoulder and an inclined cam portion, :1. lug carried by the body andadapted to contact with said cam portion and thereby more the lever andpermit the lug to pass below the shoulder, and a spring engaging thelever for moving the shoulder into engagement with the lug.

5. A dump car comprising a suitablywheeled truck, a tilting body on saidtruck, means for converting the motion of the car into a tiltingmovement on the part of the said body, and a spring connecting the bodywith the truck and tending normally to hold said body in its horizontalposition.

6. A dump-car, comprising a truck and body, a flexible connectionattached to the body and extending around the car-axle, andmanually-operated devices for ell'cctin a frictional engagement betweensaid axle and flexible connection.

7. A dump-car, comprising a truck and tilting body, a flexibleconnection attached at one end to said body and having its other endportion wrapped around the car-axle, and a manually-controlled devicefor causing said flexible connection to bind upon the said car-axle.

8. A dump-car, comprising a truck and tilting body, manually-operateddevices on the car for converting the rotary motion of the car-axle intoa tilting movement on the part of the car-body, said devices including amanually-controlled frictional power-transmitting device, and the saidcar also comprising a spring connecting the body with the truck and torestore the body to its normal position after being tilted.

and axle 9. A dump-car, comprising a truck or body,

motion of the car-axle into a tilting movement on the part of the body,said devices including a manually-controlled frictionalpowertransmitting device.

10. The combination of a Wheeled truck, tilting body on said truck, thetruck being adapted for movement along rails, and a suitable arrangementfor converting the movement of the truck along the rails into a tiltingmovement on the part of the body, said arrangement including membersadapted to be brought into a frictional or rubbing enbody, a suitableconnection for converting the rotary movement of the car-axle into atilting movement on thepart of the body, and manually-operated devicesfor effecting a frictional engagement between said connection and the axe.

13., A dump car comprising a suitably- Wheeled truck, a tilting body onsaid truck, a

frictional device for tilting the body Without stopping the 'car, andaspring connecting the body With the truck, said spring tending to holdsaid body in itsnormal position and operating to'automatically returnsaid body to its normal position after being tilted.

Signed by me at Chicago, Cook county, Illinois, this 10th day ofSeptember, 1903.

ALFRED F. BERNARD.

Witnesses: p A; F. DURAND, WM. A. HARDERS.

